remove unused map report methods
remove unused map report methods

These functions were called dynamically based on the report "adapter"
type. All reports using these "adapters" were removed in https://github.com/dimagi/commcare-hq/pull/13923

dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq